Device for detecting inner diameter and outer diameter of thin-wall part
By designing the inner and outer diameter detection device of thin-walled parts, using a pneumatic rotating float and high-precision sensor, automatic measurement of the inner and outer diameter of the workpiece is achieved, solving the problem of low manual measurement accuracy and improving measurement accuracy and consistency.
Patent Information
- Application Number
- CN202420991827.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-09
AI Technical Summary
In the prior art, due to the small number of times when manually measuring the aperture of the workpiece, the measurement accuracy is affected, making it difficult to ensure the accuracy of the measurement.
A thin-walled inner and outer diameter detection device is designed, using a pneumatic rotating float, a constrained ring, a hydraulic cylinder and a high-precision sensor. Through three-dimensional adjustment mechanism and software fit, automatic measurement of the inner and outer diameter of the workpiece is achieved and measurement accuracy is improved. .
It improves the accuracy of the inner and outer diameter measurement of the workpiece, ensures the accuracy and consistency of measurement, and is suitable for the acquisition of aperture data at different locations.
Smart Images
Figure CN222166022U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of measurement, in particular to a device for detecting inner and outer diameters of thin-walled parts. Background Art
[0002] like Figure 8 The figure shows the structure of a conical workpiece. Its outer wall is a conical structure, and the upper end is a small end, and a small hole is opened on the small end, and a large hole is opened on the large end. After the workpiece is processed, in order to meet the assembly requirements, its aperture needs to be measured. The current method is manual measurement. This measurement method ensures the accuracy of the measurement through multiple measurements. However, due to the small number of measurements, the accuracy of the measurement is affected. Utility Model Content
[0003] The utility model provides a device for detecting inner and outer diameters of thin-walled parts, so as to solve the above-mentioned deficiencies of the prior art, improve the accuracy during measurement and have strong practicability.
[0004] In order to achieve the purpose of this utility model, the following technologies are proposed:
[0005] A device for detecting inner and outer diameters of thin-walled parts comprises a lower box body, a measuring platform is installed on the upper end of the lower box body, a pneumatic rotating floating platform is installed inside the measuring platform, a placing ring is installed on the upper end of the pneumatic rotating floating platform, a constraining convex ring is extended upwardly from the outer circumference of the placing ring, the constraining convex ring can act on the outer circumference of the large end of the workpiece, so as to constrain and limit the workpiece, thereby ensuring the accuracy of the measurement, and at the same time, after limiting, the coaxiality of the workpiece and the constraining convex ring can also be ensured.
[0006] The lower box body is rotatably provided with a rotating shaft, a vertical guide is installed on the upper end of the rotating shaft, an arc groove is opened on one side of the vertical guide, a guide rail is arranged in the arc groove, a movable block is movably provided on the guide rail, a convex plate is installed on the upper end of the movable block, a vertical hydraulic cylinder is connected to the convex plate, the vertical hydraulic cylinder is installed in the lower box body, and the vertical hydraulic cylinder is connected to the hydraulic station in the lower box body, a movable head is also installed on the upper end of the movable block, a vertical plate is installed on the upper end of the movable head, a transverse guide rail is installed on one side of the vertical plate, a movable seat is movably provided on the transverse guide rail, a first sensor is installed on the movable seat, the first sensor is passed through a placing ring, a lower seat body is installed on one side of the measuring platform, a three-dimensional adjustment mechanism is installed on the lower seat body, a second sensor is installed on the three-dimensional adjustment mechanism, and the second sensor is horizontally arranged. The height of the first sensor can be adjusted by the vertical hydraulic cylinder, so that the inner diameter of the small end of the workpiece can be measured by the first sensor. The first sensor is set on the guide rail to facilitate the measurement of the inner diameter of the small end of such workpieces, and the placed workpiece can be rotated under the drive of the pneumatic rotating platform, so as to facilitate the collection of aperture data at different positions, and automatically obtain the data of the inner diameter of the small end of the workpiece through the fitting operation of the software. The second sensor is mainly used for measuring the outer diameter of the workpiece, and it can measure the outer diameter of the large end or the small end.
[0007] Furthermore, a plurality of universal wheels are installed at the lower end of the lower box body to facilitate the transfer and movement of the device.
[0008] Furthermore, an upper cover is installed at the upper end of the lower box, and the measuring platform and the second sensor are both located inside the upper cover. Handles are provided on both sides of the upper cover to facilitate the removal of the upper cover. The setting of the upper cover prevents dust from contaminating the measuring components when the device is idle.
[0009] Furthermore, a plurality of control knobs for detection are provided on the measuring platform.
[0010] Furthermore, the first sensor and the second sensor are spectral confocal displacement sensors, which have a sub-micron resolution and can also measure the thickness of transparent materials unidirectionally, and can produce an extremely small spot size.
[0011] Further, the three-dimensional adjustment mechanism includes a lower fixed plate installed on the upper end of the lower seat body, a first side plate is installed on the side wall of the lower fixed plate, a first movement hole is opened on the first side plate, a first screw is inserted into the first movement hole, a first movable plate is installed on the inner side end of the first screw, the first movable plate is movably arranged on the lower fixed plate, a first boss is installed on one side of the first movable plate, a spiral adjustment instrument is connected to the first boss, and the spiral adjustment instrument is installed on the lower fixed plate through a second boss. A second fixed plate is installed on the first movable plate, a second side plate is installed on one side of the second fixed plate, a second guide hole is opened on the second side plate, a second screw is inserted into the second guide hole, a second movable plate is installed on the inner side end of the second screw, the second movable plate is movably arranged on the second fixed plate, and the movement direction of the second movable plate is perpendicular to the movement direction of the first movable plate, a second mounting platform is installed on one side of the second fixed plate, and the movable end of the second spiral adjustment instrument installed on the second mounting platform is mounted on the second movable plate. A vertical back plate is mounted on the second movable plate, a back plate is mounted on the side wall of the vertical back plate, a third mounting platform is mounted on the upper end of the back plate, a third spiral adjuster is mounted on the third mounting platform, a third movable plate is mounted on the movable end of the third spiral adjuster, a third screw is mounted on one side of the third movable plate, a third side plate is mounted on one side of the back plate, a waist-shaped hole is opened on the third side plate, the third screw is passed through the waist-shaped hole, the third movable plate is movably mounted on the back plate, a mounting boss is mounted on the third movable plate, and the second sensor is mounted on the mounting boss. The three-dimensional direction of the second sensor is specifically adjusted by the three-dimensional adjustment mechanism, firstly, different parts of the workpiece are measured, and secondly, the outer diameter measurement operation of workpieces with different structures is convenient.
[0012] The advantages of the above technical solution are:
[0013] The utility model improves the measuring accuracy of the inner diameter and the outer diameter of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.
[0015] Figure 1 The three-dimensional structure of one embodiment is shown Figure 1 .
[0016] Figure 2 The three-dimensional structure of one embodiment is shown Figure 2 .
[0017] Figure 3 The three-dimensional structure of one embodiment is shown Figure 3 .
[0018] Figure 4 An enlarged view of A is shown.
[0019] Figure 5The three-dimensional structure of one embodiment is shown Figure 4 .
[0020] Figure 6 The three-dimensional structure of one embodiment is shown Figure 5 .
[0021] Figure 7 An enlarged view of B is shown.
[0022] Figure 8 A structural diagram of a thin-walled part is shown. DETAILED DESCRIPTION
[0023] like Figure 1 to Figure 8 As shown, a device for detecting inner and outer diameters of thin-walled parts comprises a lower box body 1, and a plurality of universal wheels 11 are installed at the lower end of the lower box body 1.
[0024] A measuring table 2 is installed at the upper end of the lower box 1, and a plurality of control knobs for detection are provided on the measuring table 2. A pneumatic rotating floating table 6 is installed in the measuring table 2, and the mounting seat can be a pneumatic rotating floating table. A placement ring 60 is installed at the upper end of the pneumatic rotating floating table 6, and a constraint convex ring 61 is provided on the outer circumference of the placement ring 60. The above-mentioned pneumatic rotating floating table adopts the ASML air-floating turntable, which is directly driven by a rotary motor and has very excellent dynamic performance and positioning accuracy. In addition to the market-leading axial, radial and tilt error motion performance, the ASML air-floating turntable also provides excellent rotational absolute positioning accuracy, repeatability and load capacity, and is easily integrated into a multi-axis motion system. The size of the ASML rotating table ranges from 150mm to 300mm, and the thin and light design can still ensure high performance. High-precision circular grating position feedback is selected, and the positioning accuracy is less than 1 arc second, and the axial and radial runout is less than 200nm. ASML's circular direct-drive motor for turntables is designed with flexible dimensions and equipped with a linear amplifier. In a vibration-isolated laboratory environment, the in-position stability and minimum step size of the ASML turntable are less than 0.5 arc seconds.
[0025] The lower box body 1 is rotatably provided with a rotating shaft 700, and a vertical guide 7 is installed on the upper end of the rotating shaft 700. An arc groove is provided on one side of the vertical guide 7, and a pair of limit switches 71 are installed on the arc groove. A guide rail 73 is provided in the arc groove, and a movable block 72 is movably provided on the guide rail 73. A limit block 73 is installed on one side of the movable block 72, and the limit block 73 moves on the limit switch 71. A convex plate 74 is installed on the upper end of the movable block 72, and a vertical hydraulic cylinder 740 is connected to the convex plate 74. The vertical hydraulic cylinder 740 is installed in the lower box body 1, and the vertical hydraulic cylinder 7 40 is connected to the hydraulic station in the lower box body 1, a movable head 75 is also installed on the upper end of the movable block 72, a vertical plate 76 is installed on the upper end of the movable head 75, a transverse guide rail 77 is installed on one side of the vertical plate 76, a movable seat 78 is movably provided on the transverse guide rail 77, a first sensor 80 is installed on the movable seat 78, and the first sensor 80 is passed through the placement ring 60, a lower seat body 30 is installed on one side of the measuring platform 2, a three-dimensional adjustment mechanism is installed on the lower seat body 30, a second sensor 50 is installed on the three-dimensional adjustment mechanism, and the second sensor 50 is arranged horizontally. The first sensor 80 and the second sensor 50 are spectral confocal displacement sensors.
[0026] The three-dimensional adjustment mechanism includes a lower fixed plate 31 installed on the upper end of the lower seat body 30, a first side plate 33 is installed on the side wall of the lower fixed plate 31, a first movement hole 34 is opened on the first side plate 33, a first screw 35 is inserted in the first movement hole 34, a first movable plate 32 is installed on the inner side end of the first screw 35, the first movable plate 32 is movably arranged on the lower fixed plate 31, a first convex seat 53 is installed on one side of the first movable plate 32, a screw regulator 52 is connected to the first convex seat 53, the position of the first movable plate 32 can be adjusted by the screw regulator 52 which is similar to the regulator of the screw micrometer structure, and the first movement hole 34 plays the role of limiting the movement distance. The screw regulator 52 is installed on the lower fixed plate 31 through the second convex seat 51. A second fixed plate 37 is installed on the first movable plate 32, a second side plate 38 is installed on one side of the second fixed plate 37, a second guide hole is opened on the second side plate 38, a second screw 39 is passed through the second guide hole, a second movable plate is installed on the inner end of the second screw 39, the second movable plate is movably arranged on the second fixed plate 37, and the movement direction of the second movable plate is perpendicular to the movement direction of the first movable plate 32, a second mounting platform 41 is installed on one side of the second fixed plate 37, a second spiral adjuster 42 is installed on the second mounting platform 41 and the movable end is installed on the second movable plate, and the second movable plate is adjusted by the second spiral adjuster 42. A vertical back plate 40 is mounted on the second movable plate, a back plate 43 is mounted on the side wall of the vertical back plate 40, a third mounting platform 47 is mounted on the upper end of the back plate 43, a third screw adjuster 48 is mounted on the third mounting platform 47, a third movable plate 46 is mounted on the movable end of the third screw adjuster 48, the position of the third movable plate 46 can be adjusted by the third screw adjuster 48, a third screw 45 is provided on one side of the third movable plate 46, a third side plate 44 is mounted on one side of the back plate 43, a waist-shaped hole is opened on the third side plate 44, the third screw 45 is passed through the waist-shaped hole, the third movable plate 46 is movably arranged on the back plate 43, a mounting boss 49 is mounted on the third movable plate 46, and a second sensor 50 is mounted on the mounting boss 49.
[0027] An upper cover 10 is installed at the upper end of the lower box body 1 . The measuring platform 2 and the second sensor 50 are both located inside the upper cover 10 . Handles 12 are respectively provided on both sides of the upper cover 10 .
[0028] When measuring, the operator first places the large end of the workpiece on the placement ring 60 , and the large end of the workpiece is limited and constrained by the constraining convex ring 61 .
[0029] Then the operator adjusts the height of the first sensor 80 through the vertical hydraulic cylinder 740 according to the height of the inner diameter of the workpiece and the size of the inner hole of the small end, so that the light spot of the first sensor 80 is located on the inner circumference of the aperture of the small end of the workpiece. At the same time, the position of the first sensor 80 needs to be adjusted appropriately. After adjustment, the first sensor 80 is fixed by the locking screw 79.
[0030] Then, the operator adjusts the position of the second sensor 50 through the screw adjuster 52, the second screw adjuster 42 and the third screw adjuster 48 according to the outer diameter of the workpiece, so that the light spot emitted by the second sensor 50 can intersect with the axial direction of the workpiece.
[0031] After the adjustment is completed, the pneumatic rotating platform 6 is started to rotate the workpiece. When the workpiece rotates, the second sensor 50 will measure the outer diameter of the large end or small end of the workpiece, and the first sensor 80 will complete the measurement of the small end or large end of the workpiece. This measurement method has strong continuity, so it is easy to sample the inner diameter and outer diameter data at different positions of the workpiece, and because the amount of data collected during measurement is large, the authenticity of the inner diameter and outer diameter after fitting is improved, and the accurate inner diameter and outer diameter, roundness, circumference and other parameters of the workpiece are calculated through fitting.
[0032] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.
Claims
1. A device for detecting inner and outer diameters of thin-walled parts, characterized in that: It includes a lower box body (1); A measuring platform (2) is installed at the upper end of the lower box body (1), a pneumatic rotating floating platform (6) is installed inside the measuring platform (2), a placing ring (60) is installed at the upper end of the pneumatic rotating floating platform (6), and a restraining convex ring (61) is provided on the outer circumference of the placing ring (60) extending upward; The lower box body (1) is rotatably provided with a rotating shaft (700), the upper end of the rotating shaft (700) is installed with a vertical guide member (7), one side of the vertical guide member (7) is provided with an arc groove, a guide rail (73) is provided in the arc groove, a movable block (72) is movably provided on the guide rail (73), a convex plate (74) is installed at the upper end of the movable block (72), a vertical hydraulic cylinder (740) is connected to the convex plate (74), and the vertical hydraulic cylinder (740) is installed in the lower box body (1), and The vertical hydraulic cylinder (740) is connected to the hydraulic station in the lower box (1); a movable head (75) is also installed at the upper end of the movable block (72); a vertical plate (76) is installed at the upper end of the movable head (75); a transverse guide rail (77) is installed on one side of the vertical plate (76); a movable seat (78) is movably provided on the transverse guide rail (77); a first sensor (80) is installed on the movable seat (78); and the first sensor (80) is passed through the placement ring (60); A lower seat body (30) is installed on one side of the measuring platform (2), a three-dimensional adjustment mechanism is installed on the lower seat body (30), a second sensor (50) is installed on the three-dimensional adjustment mechanism, and the second sensor (50) is arranged in a transverse direction.
2. The thin-walled part inner and outer diameter detection device according to claim 1, characterized in that: A plurality of universal wheels (11) are mounted on the lower end of the lower box body (1).
3. The device for detecting inner and outer diameters of thin-walled parts according to claim 1, characterized in that: An upper cover body (10) is installed at the upper end of the lower box body (1), and the measuring platform (2) and the second sensor (50) are both located inside the upper cover body (10).
4. The device for detecting inner and outer diameters of thin-walled parts according to claim 1, characterized in that: The measuring platform (2) is provided with a plurality of control knobs for detection.
5. The device for detecting inner and outer diameters of thin-walled parts according to claim 3, characterized in that: Handles (12) are respectively provided on both sides of the upper cover body (10).
6. The device for detecting inner and outer diameters of thin-walled parts according to claim 1, characterized in that: The first sensor (80) and the second sensor (50) are spectral confocal displacement sensors.
7. The device for detecting inner and outer diameters of thin-walled parts according to claim 1, characterized in that: The three-dimensional adjustment mechanism comprises a lower fixing plate (31) mounted on the upper end of the lower seat body (30); a first side plate (33) is mounted on the side wall of the lower fixing plate (31); a first movement hole (34) is formed on the first side plate (33); a first screw (35) is inserted into the first movement hole (34); a first movable plate (32) is mounted on the inner side end of the first screw (35); the first movable plate (32) is movably mounted on the lower fixing plate (31); a first convex seat (53) is mounted on one side of the first movable plate (32); a spiral adjustment instrument (52) is connected to the first convex seat (53); and the spiral adjustment instrument (52) is mounted on the lower fixing plate (31) via a second convex seat (51); A second fixed plate (37) is mounted on the first movable plate (32), a second side plate (38) is mounted on one side of the second fixed plate (37), a second guide hole is opened on the second side plate (38), a second screw (39) is inserted into the second guide hole, a second movable plate is mounted on the inner side end of the second screw (39), the second movable plate is movably mounted on the second fixed plate (37), and the movement direction of the second movable plate is perpendicular to the movement direction of the first movable plate (32), a second mounting platform (41) is mounted on one side of the second fixed plate (37), and a movable end of a second screw adjusting instrument (42) is mounted on the second mounting platform (41) and mounted on the second movable plate; A vertical back plate (40) is mounted on the second movable plate, a back plate (43) is mounted on the side wall of the vertical back plate (40), a third mounting platform (47) is mounted on the upper end of the back plate (43), a third screw adjusting device (48) is mounted on the third mounting platform (47), a third movable plate (46) is mounted on the movable end of the third screw adjusting device (48), a third screw (45) is provided on one side of the third movable plate (46), a third side plate (44) is mounted on one side of the back plate (43), a waist-shaped hole is opened on the third side plate (44), the third screw (45) is inserted into the waist-shaped hole, the third movable plate (46) is movably mounted on the back plate (43), a mounting boss (49) is mounted on the third movable plate (46), and the second sensor (50) is mounted on the mounting boss (49).